<template>
  <div>
    <el-breadcrumb separator-class="el-icon-arrow-right">
      <el-breadcrumb-item :to="{ path: '/home' }">首页</el-breadcrumb-item>
      <el-breadcrumb-item>权限管理</el-breadcrumb-item>
      <el-breadcrumb-item>角色列表</el-breadcrumb-item>
    </el-breadcrumb>

    <el-card>
      <el-row>
        <el-button type="primary" @click="addRoleVisible = true">添加角色</el-button>
      </el-row> 


      <!-- 角色列表区域 -->
      <el-table :data="rolelist"  border stripe>
          <!-- 展开列 -->
        <el-table-column type="expand">
          <template slot-scope="scope">
            <el-row :class="['bdbottom',i1 === 0 ? 'bdtop' : '','vcenter']" v-for="(item1,i1) in scope.row.children" :key="item1.id" >
              <!-- 一级权限 -->
              <el-col :span="5">
                <el-tag closable @close="removeRightById(scope.row,item1.id)">{{item1.authName}}</el-tag>
                <i class="el-icon-caret-right"></i>
              </el-col>
              <!--2级权限 -->
              <el-col :span="19">
                <el-row :class="[i2 === 0 ? '' : 'bdtop' ,'vcenter']" v-for="(item2,i2) in item1.children" :key="item2.id" >
                  <el-col :span="6">
                    <el-tag type="success" closable @close="removeRightById(scope.row,item2.id)">{{item2.authName}}</el-tag>
                    <i class="el-icon-caret-right"></i>
                  </el-col>
                  <el-col :span="18">
                    <el-tag type="warning" v-for="(item3) in item2.children" :key="item3.id" closable @close="removeRightById(scope.row,item3.id)">{{item3.authName}}</el-tag>
                  </el-col>
                </el-row>
              </el-col>
            </el-row>
          </template>  
        </el-table-column>  
          <!-- 索引列 -->
        <el-table-column type="index"></el-table-column>
        <el-table-column label="角色名称" prop="roleName"></el-table-column>
        <el-table-column label="角色描述" prop="roleDesc"></el-table-column>
        <el-table-column label="操作" width="300px">
          <template slot-scope="scope">
              <!-- 修改 -->
            <el-button type="primary" icon="el-icon-edit" size='mini' >编辑</el-button>
            <!-- 删除 -->
            <el-button type="danger" icon="el-icon-delete" size='mini'>删除</el-button>
            <!-- 分配角色 -->
            <el-button type="warning" icon="el-icon-delete" size='mini' @click="showSetRightDialog(scope.row)">分配权限</el-button>
          </template>
        </el-table-column>
       </el-table>
    </el-card>

    <!-- 添加角色对话框用户 -->
    <el-dialog
        title="添加角色"
        :visible.sync="addRoleVisible"
        width="50%">
        <el-form ref="addFormref" :model="addForm" label-width="70px">
          <el-form-item label="角色名" prop="roleName">
            <el-input v-model="addForm.roleName"></el-input>
          </el-form-item>
          <el-form-item label="角色描述" prop="roleDesc">
            <el-input v-model="addForm.roleDesc"></el-input>
          </el-form-item>
        </el-form>  
        <span slot="footer" class="dialog-footer">
          <el-button @click="addRoleVisible = false">取 消</el-button>
          <el-button type="primary" @click="addRoleVisible">确 定</el-button>
        </span>
      </el-dialog>


      <!-- 分配权限的对话框 -->
      <el-dialog
        title="分配权限"
        :visible.sync="setRightDialogVisible"
        width="50%"
        @close="setRightDialogClose">
        <!-- 树形控件 -->
        <el-tree :data="rightsList" 
        :props="treeProps" 
        show-checkbox node-key="id" 
        default-expand-all
        :default-checked-keys="defKeys"
        ref="treeRef"></el-tree>
        <span slot="footer" class="dialog-footer">
          <el-button @click="setRightDialogVisible = false">取 消</el-button>
          <el-button type="primary" @click="allotRights">确 定</el-button>
        </span>
      </el-dialog>
  </div>
</template>

<script>


export default {
 data(){
     return {
         rolelist:[],
         addRoleVisible:false,
         addForm:{
           roleName:'',
           roleDesc:'',
           
         },
         setRightDialogVisible:false,
         rightsList:[],
         treeProps:{
          children: 'children',
          label: 'authName'
         },
         defKeys:[],
         roleId:''
     }
 },
 created(){
     this.getRolesList()
 },
 methods:{
     async getRolesList(){
         const {data:res} = await this.$http.get('roles')
         if(res.meta.status !== 200){
             return this.$message.error('获取角色失败')
         }
         this.rolelist = res.data
         console.log(res.data)

     },
     async removeRightById(role,rightId){
       const confirmResult = await this.$confirm('此操作将永久删除该文件, 是否继续?', '提示', {
          confirmButtonText: '确定',
          cancelButtonText: '取消',
          type: 'warning'
          }).catch(err=>err)
          
          if(confirmResult !== 'confirm') {
              return this.$message.info('取消了删除')
          }
        const {data:res} = await this.$http.delete(`roles/${role.id}/rights/${rightId}`)
        if(res.meta.status !== 200) {
          return this.$message.error('删除权限失败')
        }
        role.children = res.data
     },
     async showSetRightDialog(role){
       this.roleId = role.id;
       const {data:res} = await this.$http.get('rights/tree')
       if(res.meta.status !== 200) {
         return this.$message.error('获取权限数据信息失败')
       }
       this.rightsList = res.data;
       this.getLeafKeys(role,this.defKeys)
       console.log(this.rightsList)
       this.setRightDialogVisible = true
       console.log(this.defKeys)
     },
     getLeafKeys(node,arr){
       if(!node.children){
         return arr.push(node.id)
       }

       node.children.forEach(item => {
         this.getLeafKeys(item,arr)
       });
     },
     setRightDialogClose(){
       this.defKeys=[]
     },
     async allotRights() {
      //当用户在树形权限对话框中点击确定，将用户选择的
      //权限发送请求进行更新

      //获取所有选中及半选的内容
      const keys = [
        ...this.$refs.treeRef.getCheckedKeys(),
        ...this.$refs.treeRef.getHalfCheckedKeys()
      ]
      //将数组转换为 , 拼接的字符串
      const idStr = keys.join(',')

      //发送请求完成更新
      const { data: res } = await this.$http.post(
        `roles/${this.roleId}/rights`,{ rids:idStr })
      if (res.meta.status !== 200)
        return this.$message.error('分配权限失败')

      this.$message.success("分配权限成功")
      this.getRolesList();
      //关闭对话框
      this.setRightDialogVisible = false;
    }
  }
 
  
}
</script>

<style lang="less" scoped>
  .el-tag{
    margin: 7px;
  }
  .bdtop{
    border-top: 1px solid #eee;
  }
  .bdbottom{
    border-bottom: 1px solid #eee;
  }
  .vcenter{
    display: flex;
    align-items: center;
  }
</style>
